Frederiksen
Showing 136–150 of 656 results
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Biology
Dialysis tube, 25 mm wide, Ø16 mm
The dialysis tubing is a semipermeable membrane tubing intended for osmosis and diffusion experiments. The tubing is supplied as a 5 meter roll and is 25 mm wide in flat form, while it achieves an internal diameter of approximately 16 mm when filled with liquid.
SKU: FR-038705 -
Biology
Dicot Stem model, small
The model shows the structure of a stem from a dicotyledonous plant. The vascular and spicate parts are marked in clear colours so that students can see the vascular system. The growth zone is shown in yellow-green and the dermis is in dark green, while non-functional wood is shown in light green.
SKU: FR-774575 -
Physics
Diffraction grating, 100 lines/mm
Grating copy encapsulated between two glass plates for protection and flatness. Active grating area approx. 45 × 30 mm; total glass plate size approx. 63.5 × 48 mm. The grating constant (100 l/mm) gives clearly separated diffraction maxima when using common light sources and lasers.
SKU: FR-325000 -
Biology, Chemistry, Earth Science, Environmental, Forensics, Life Science
Digital microscope, USB, 5 MP
Biology, Chemistry, Earth Science, Environmental, Forensics, Life ScienceDigital microscope, USB, 5 MP
Smart USB macro magnifier with 5 MP resolution and included stand, which makes it easy for you to examine small details and surfaces on the screen. The macro magnifier has a built-in LED light with 8 diodes and light control, so you can adjust the lighting as needed. With the included stand, you get a slightly larger working distance and lower magnification, while if you use the magnifier directly on a surface, you can easily adjust the magnification and focus with the focus wheel. The magnifier connects to your computer via USB and comes with Windows-compatible software, where you can both view live images and record photos or videos.
SKU: FR-078106
